292 GEO. H. HORN, M. D. 



81. It. iiitidiila Lee — Elonjrate -oval, pale yellowish testaceous, head fus- 

 cous, moderately shiiiiiij;. Clypeus subtruncate, slightly concave, border nar- 

 rowly reflexed, at base slightly coarctate, punctures coarse, not close, front more 

 coaT.sely punctured, the punctures forming a dense group on each side. Thorax- 

 narrowed in front, anterior border narrowly thickened, sides arcuate, entire, 

 fimbriate, hind angles rounded; disc with moderate punctures, regularly dis- 

 posed, not closely placed. Elytral punctures coarser and rather closer than those 

 of the thorax, the sutural costa distinct, the others obliterated, margin with 

 .short fimbripe. Pygidium finely alutaceous, sparsely rather finely punctate. 

 Metasternum sparsely indi.stinctly punctate, the hairs moderate in length, but 

 sparse. Abdomen sparsely punctate, each puncture with a short recumbent hair. 

 Legs with very few hairs, claws feebly arcuate with a small basal tooth. Last 

 joint of maxillary palpi fui^iform, with an obsolete impression. Length .45 inch ; 

 11.5 mm. 



Male. — Antennal club nearly one and a half times the length of 

 the stem. Ventral characters absent. 



Fj:imale. — Antennal club as long as the funiculus. Tooth of 

 claws near the middle and slightly stronger than in the male. 



Variations.^ — None have been observed. 



This species has very decidedly tlie facies of a Cyclocephala of 

 elongate form (e. g. longula), in both form and color. The i-ounded 

 hind angles of the thorax is of very rare occurrence in the genus, 

 there being but one other pronounced case in a preceding group 

 (ecostata). 



Occurs at Cape San Lucas, Lower California. Collected by Mr. 

 John Xantus. 



L,ACHN«STERNA Hope. 

 Synonyms : Trichestes Erichs. Aua/loni/chu and Tostegoptera Blanch. 

 Euijastra, Endrosa and Gynnis Lee. 



Essays of a General Nature. 



Knoch. — Neue Beytrage zur Lisectenkunde. Leipzig, 1801. 



Blanchard. — Catalogue de la collection entomologique du Museum 

 d'Histoire Naturelle de Paris. Paris, 1850. 



Burmeister. — Handbuch der Entomologie vol. iv, 2. Berlin, 1855. 



LeConte. — Synopsis of the Melolonthidje of the United States. 

 Jour. Acad. Nat. Sci. ser. ii, vol. iii. Philadelphia, 1856. 



Group I. 

 1. L. lanceolata Say (Melolontha), Jouru. Acad, iii, p. 242; edit. Lee. 2, p. 

 142; Blanch. {TontefinptenO. ]). 149; Burm.. p. .356; Lee. (Ldchnnsternn) 

 p. 237. 



